Door-operating mechanism.



No. 791,164. 1111111111111) MAY 30, 1905. w; R. & 11. PITT.

DOOR OPERATING MECHANISM.

APPLICATION FILED DBO. 30, 1904 2 SHEETS-SHEET 1.

PATENTED MAY 30,1905.

W. R. & R. PITT. DOOR OPERATING MECHANISM.

APPLICATION FILED DBO. 30,-1904 2 SHEETS-SHEET 2.

: UNITED STATES Patented May 30, 1995.

l PATENT OFFICE.

' WILLIAM R. PITT AND RAFFORD PITT, OF NEW ROCHELLE, NEW YORK,

ASSIGNORS TO THE PITT CAR GATE COMPANY,

NEW JERSEY.

DOOR-OPERATING MECHANISM.

SPECIFICATION forming part of Letters Patent No. 791,164., dated May 30,1905.

Application filed December 30, 1904. Serial No. 238,894.

To all whom it may concern:

Be it -known that we, WILLIAM R. PITT and RAFFORD PITT, citizens of theUnited States,

and residents of New Rochelle, in the county of Westchester and State ofNew York, have in vented certain new and useful Improvements inDoor-Operating Mechanism, of which the following is a full, clear, andexact specification.

Our invention relates to improvements in mechanism for opening andclosing the class of doors which are supported at one vertical edge onhinges orother pivotal supports and which are divided vertically intoleaves or portions, the said leaves or portions being hinged togetherand adapted to fold one upon another.

The object of our invention is to furnish a simple mechanismv foropening and closing such doors whereby the door itself may occupy theleast space as it opens and closes and the operation of the door maybeattended with the least possible friction and without danger of any ofthe parts of the mechanism becoming jammed and refusingto move.

In general terms our invention comprises the combination, with a doordivided vertically into leaves or portions which are suitably hingedtogether and are adapted to fold one upon another, of operatingmechanism for said door, consisting of an approximately horizontal barrigidly attached to the outer leaf of said door and having its heel endpivotally connected to a slide adapted to move on a suitably-supportedfixed track, said slide and track, a series of levers connected at oneextremity to said horizontal bar and at the other extremity to asuitably-supported vertical rocking shaft, a suitably-supportedhorizontal rocking shaft having cog connection with said verticalrocking shaft, and suitable operating mechanism connecting with saidhorizontal rocking shaft.

Our invention may be applied to doors of the class described whereverused, yet it is particularly, adapted to be used with such folding doorswhen the same are installed in street or railway car vestibules.

Our invention is shown in the accompanying drawings, in which similarletters refer tosimilar parts.

Figure l is a horizontal section of a portion of a car-body, taken onthe plane of the line A CORPORATION OF 1'1 of Fig. 2. Fig. 2 is avertical section of the same, taken on the plane of the line 2 2 ofFig. 1. Fig. 3 is an enlarged detail section of the operating-gear,taken on the line 3 3 of Fig. A. Fig. 4: is an enlarged detail sectionof the operating-gear, taken on the line 4 4 of Fig. 3. Fig. 5 is anenlarged detail section of a part of the horizontal hinged bar B, takenon the line 5 5 of Fig. 6. Fig. 6 is a detail horizontal section of thehorizontal bar B, taken on the line 6 6 of Fig. 5. y We have shown ourinvention as applied to a door arranged'to close the entrance to an exitside of a car-platform, such as is in common use where a passage-waybetween successive cars of a train is provided for by means of anopening through the central portion of the dashboard. We have shown ourinvention in connection with a door divided into two leaves or portionssubstantially equal in width, and this is the preferred form in which weuse such doors with our saidinvention. Doors having a greater number ofleaves or folding portions could be employed with our invention withoutchanging its essential operation.

In the drawings, A A are two leaves or folding portions of thedoor,being hinged to each other at a and the inner portion of the door Abeing hinged at a to a suitable post I or other support in the car-body.

Bis a bar, preferably of metal and most conveniently made horizontal,the outer end of which is riveted to the leaf or portion A of the door,its heel end having pivotal connection at ltWllJl'l a slide H, adaptedto move reciprocally on a fixed track L, supported on the car body. Thepivotal connection between the bar B and the slide H is preferably madeby the double flange J, projecting out at right angles from the bar Band connected with the slideH by the pivot h. Centrally supported onthis pivot it is an antifrictionroller j of such suitable diameter thatwhen the slide H is moved along the track L the antifriction-roller willpress lightly against the track L and the end of the bar B will be infree contact with the roller.

Supported on the roof of the car-body is a rocking shaft f, which bearsa horizontal cog- Wheel M, which is held rigidly in place upon therocking shaft f by the nut m and turns with the rocking shaft.

0 is a horizontal rocking shaft supported on the side of thecar-platform and projecting through the same.

N is a segment of a cog-wheel carried on a sleeve V, supported by shaft0, said sleeve being held in place by aset-screw 0. The cog- Wheel M andthe cog-segment N are out conica-lly and engage with each other at rightangles, so as to convert the vertical motion of the rocking shaft O intothe horizontal motion of the rocking shaft f.

C is a lever pivoted at b to the horizontal bar B.

P is a lever rigidly connected with the rocking shaft f and turning withit.

E is a pitman or link having pivotal connection with the levers G and P.

D is a link or arm pivoted at the junction of the levers G and pitman E,the three meeting in a common joint at c. The other end of the arm orlink D is supported by the pivot (Z, secured to the roof of theplatform.

S is a bell-crank lever pivoted to the side of the car-body at s andhaving a handle T. To the small arm of the lever S at t is pivoted apitman-lever R, which at its other extremity is pivoted at r to anoperating-arm F, rigidly connected with the horizontal rocking shaft 0by the screw 9.

The operation of our invention is as follows: Assuming that the door isclosed and that it is desired to open the same, the handle T is presseddown. This raises the shorter arm of the angular lever S, and with itthe pitman R, which in turn pushes'up the operatingarm F. This revolvesthe rocking shaft 0, through which the motion is transmitted to theseries of levers P, E, and C and by them to the bar B and the door. Asthe cog-wheel M revolves the levers and the horizontal bar B, carryingwith it the door, move into the positions shown in dotted lines inFig. 1. The slide H and the pivotal connection, already described,between it and the bar B make the passage of the bar B suflicientlysmooth and free from friction and at the same time compelthe bar B tofollow a predetermined path. The two leaves of the door fold uponthemselves as the door B moves to its extreme open position. WVhen thedoor is to be closed, the reverse action of all the parts takes place,beginning With the raising up of the hand-lever T.

Having described our invention, what we claim, and desire to secure byLetters Patent, 1s

1. The combination with a door divided vertically into leaves orportions which are suitably hinged together and are adapted to fold oneupon the other; of operating mechanism for said door consisting of a barattached to the outer leaf of said door, a series of lovers connected atone extremity to said bar and at the other extremity to asuitably-supported vertical rocking shaft, a suitably-supportedhorizontal rocking shaft, having cog engagement with said verticalrocking shaft, and suitable operating mechanism connected with saidhorizontal rocking shaft, substantially as described.

2. The combination with a door divided vertically into leaves orportions which are suitably hinged together and are adapted to fold oneupon the other; of operating mechanism for said door, consisting of anapproximately horizontal bar rigidly attached to the outer leaf of saiddoor and having its heel end pivotally connected to a slide adapted tomove on a suitably-supported fixed track; the said slide and track; aseries of lovers connected at one extremity to said horizontal bar andat the other extremity to a suitably-supported vertical rocking shaft; asuitably-supported horizontal rocking shaft having cog connection withsaid vertical rocking shaft, and suitable opera ting mechanism connectedwith said horizontal rocking shaft, substantially as described.

3. In the vestibule of a street or railway car, the combination with adoor hinged at one edge to the car-body and divided vertically intoleaves or portions which are suitably hinged together and are adapted tofold one upon the other; of operating mechanism for said door consistingof a horizontal bar rigidly attached at its outer end to the outer leafof said door, and having its-heel end pivotally connected with a slideadapted to move on a fixed track; the said slide and the fixed tracksuitably supported on the car-body; a series of straight leverspivotally joined to each other and connected pivotally at one extremityto said horizontal bar and rigidly at the other extremity to a verticalrocking shaft supported on the roof of the platform; a bar or linkpivoted at one end to the under side of the platform-roof and at theother end having pivotal connection with two of said series of leversand meeting in a common joint with antifriction-roller supported betweensaid slide and the heel end of said horizontal bar;

a series of three levers, one being pivoted to said horizontal bar andone rigidly connected to a vertical rocking shaft supported on the roofof the platform and these two levers being pivotally connected by a linkor pitman; a bar or link working at one end on a pivot secured to theunder side of the platformroof and at the other end having pivotalconnection with the lever pivoted to the horizontal bar and with thesaid pitman at their common joint; a horizontal rocking shaft supportedin the side of the car-platform; cogwheels on said vertical andhorizontal rocking shafts adapted to engage with each other and totransmit motion from the operatinglever; and a compound operating-leveron the outer end of the car-platform, consisting of an angularhand-lever, a pitman-lever having pivotal connection with the short armof said hand-lever, and an operating-lever pivoted at one end of thepitman-lever and at the other end rigidly connected with the horizontalrocking shaft, substantially as described.

Witnesses.

E. T. SANFORD, H. M. CooMns.

